Set initial value of cooldown setting to true

Bug: 356768397
Test: manual - check that cooldown setting is on,
      turn airplane mode on and off, sending high priority notif
      => notif is suppressed
Flag: com.android.systemui.notification_avalanche_suppression

Change-Id: Ifee08c13d0184e24be65d54d27055f5c3d242727
diff --git a/packages/SystemUI/customization/src/com/android/systemui/shared/notifications/data/repository/NotificationSettingsRepository.kt b/packages/SystemUI/customization/src/com/android/systemui/shared/notifications/data/repository/NotificationSettingsRepository.kt
index 362e23d..96d79df 100644
--- a/packages/SystemUI/customization/src/com/android/systemui/shared/notifications/data/repository/NotificationSettingsRepository.kt
+++ b/packages/SystemUI/customization/src/com/android/systemui/shared/notifications/data/repository/NotificationSettingsRepository.kt
@@ -71,7 +71,7 @@
             .stateIn(
                 scope = backgroundScope,
                 started = SharingStarted.Eagerly,
-                initialValue = false,
+                initialValue = true,
             )
 
     /** The default duration for DND mode when enabled. See [Settings.Secure.ZEN_DURATION]. */